synonyms: brainless, dense, dull, idiotic, slow, sluggish, thick
hat tip: Mr Squirrel
Tag: sharp
as sharp as a tack
Aciculate, Acuate, Acuminate, Acuminous
As sharp as a needle
Aciculate, Acuate, Acuminate, Acuminous
as sharp as a razor
Aciculate, Acuate, Acuminate, Acuminous, Acute
as sharp as a thistle
Aciculate, Acuate, Acuminate, Acuminous, Acute
as sharp as a knife
Synonyms: acute, fine, barbed, honed, pointed, pointy, tapered, alert, astute, bright, brilliant, clever, fast, observant, quick, savvy, smart, wise